minimal value
(5) “minimal value” means a retail value in the United States at the time of acceptance of $100 or less, except that— (A) on January 1, 1981 , and at 3 year intervals thereafter, “minimal value” shall be redefined in regulations prescribed by the Administrator of General Services, in consultation with the Secretary of State, to reflect changes in the consumer price index for the immediately preceding 3-year period; and (B) regulations of an employing agency may define “minimal value” for its employees to be less than the value established under this paragraph; and